Sock



FIG. 1 is a perspective view of a sock showing my new design;

FIG. 2 is a front view of the sock shown in FIG. 1 ;

FIG. 3 is a rear view of the sock shown in FIG. 1 ;

FIG. 4 is a left side view of the sock shown in FIG. 1 ;

FIG. 5 is a right side view of the sock shown in FIG. 1 ; and,

FIG. 6 is a bottom view of the sock shown in FIG. 1 . 

CLAIM The ornamental design for a sock, as shown and described. 